shopping_list=[]
shopping_list.append("键盘")
shopping_list.append("键帽")
shopping_list.remove("键帽")
shopping_list.append("音响")
shopping_list.append("电竞椅")
shopping_list[1]="硬盘"


print(shopping_list)
print(len(shopping_list))
print(shopping_list[0])

price=[800,255,366,2100]
print(max(price))
print(min(price))
print(sorted(price))




